Interesting thread for sure, I just tried my car again, I think I have NO lag at all. I have a manual shift, throttle body spacer,k+n CAI,bamachips RACETUNE.
Dont recall ever having a lag, just that total dead spot when trying to blip the throttle between downshifts.Since the racetune it is very responsive, but still have the rise in RPM's when I let off the gas or depress the clutch...I might have to look at this. What I may do though is expose both sides of the tape and put a piece of .020 aluminum on it, this will help spread the load over a wider area and the the tape will not compress because there will be no hardpoints!
ONCE MORE... this has NOTHING TO DO with throttle response. It's just simple mod, that removes the dead throttle pedal travel, before the electrical connectors are in contact with sensitive area.